Attachment for printing-presses



c. L. WELSH. ATTACHMENT FOR PRINTING PRESSES. APPLICATION FILED OCT-30,1920- 1,4003%, v Patented Dec. 20, 1921.

I NVENTOR.

CLYDE L. WELSH, OH PITTSBURGH, PENNESYLVANIA.

ATTACHMENT F012. PRINTING-PRESSES.

ricer lei,

Specification of Letters IPatent.

Patented Dec. 211, 19211.

Application filed October 19%. Serial No. 426,849.

To all whom it may concem:

Be it known that 1, Germs L. Writ-s11, a citizen of the United Estates, residing at Pittsburgh, in the county of Allegheny and fitate of Pennsylvania, have invented certain new and useful Improvements in Attachments for Printing-Presses, of which the following is specification.

This invention relates to an attachment for printing presses, and the primary object thereof is to provide a device of the character described, in a manner as hereinafter set forth, adapted to be mounted in the fountain of a printing press, whereby the ink within the fountain may be confined to any desired portion thereof, thereby providing for a substantial saving in the use of ink in work not requiring the inking of the entire fountain.

Further objects of the invention are to provide a device of the class stated, which is simple in its construction and arrangement, stron durable and efficient in its use, readii y installed, and inexpensive to manufacture.

To the accomplishment of these and such other objects as may hereinafter appear, the invention consists of the novel construction, combination and arrangement of parts herein specifically described and illustrated in the accompanying drawing, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations, and modifications can be resorted to which come within the scope'of the claims hereunto appended.

In the drawing forming a portion of this specification and wherein like numerals of reference designate corresponding parts throughout the several views:

Figure 1 is a side elevation of the attachment in accordance with this invention.

Fig. 2 is a sectional view on line "ll-11, Fig. 1.

Referring in detail to the drawing 1 indicates the fountain roll of a printing press, and 2 the fountain in which the ink is ordinarily deposited.

Detachably clamped to the frame structure of the printing press, in rear of the fountain 2, is a vertically extending supporting rod 3 formed with the threaded portion 4. The lower end of the rod 3 carries a horizontally disposed bar 5, which in connection with the clamping member 6, slidably mounted on the rod 3, and the nut I, is adapted for clamping the rod 3 to the fram ng structure of the printing press.

Slidably mounted for vertical movement on the rod 3 is a horizontally extending bracket 8 which carries a depending bar 9 secured to the forward end thereof. The lower end of the bar Sis formed with an open end slot 10 in which a small yoke 10 is pivotally connected by means of the pin 11.

Mounted to extend transversely across the fountain 2 is a pair of flat confining blocks 12 and 13 movably secured together by means of the belt 1 1 which is carried by the block 12 and extends through the elongated slot 15 in the block 13, and provided with the washers 16 and 17, tension spring 18, and nut 19.

The upper edge of the block 12 is formed with the groove 20 for the reception of the slotted lower end of the bar 9, permitting the leg 21 of the yoke 10 to engage the top edge of the block 12, and the leg 22 of the yoke 10 to engage the top edge of the block 13.

T he block 12 is shaped to conform to the contour of the fountain 2 and has its forward portion of the same radial curvature as the roll 1 which it engages. The radius of the curvature of the forward portion of the block 13 is somewhat greater than the roll 1.

The supporting rod 41- is. provided with a wing nut 23 for forcing the bracket 3 downwardly on the rod thereby causing the yoke 10 to exert a pressure on the blocks 12 and 13 through its connection with the bar 9. The yoke 10 being pivoted and the blocks tensionally connected together, pres sure will be exerted through the leg 22 of the yoke 10 to the block 13 after block 12 has been properly positioned in the fountain 2.

The action of the pair of blocks is such that should any ink seep through an interstice between the block 12 and the fountain wall, the block 13 will so adjust itself within the fountain as to close the interstice and prevent seepage.

As the device is intended for confining the ink to only a portion of the fountain, the device may be readily shifted to the desired position by changing its position on the frame structure of the press by the manipulation of the nut 7.

I claim:

1. An attachment for the purpose set forth comprising a pair of confining blocks, one being adjustable against and supported from the other, an adjustable bracket provided with a depending bar arranged above said blocks, and a pivot'ed member carried by said bar and adapted to engage the blocks wherebythe adjustable block will be shifted.

2. An attachment for the purpose set forth comprising a pair of confining blocks, one being adjustable against and supported from the other, an adjustable bracket provided with a depending bar arranged abm'e said blocks, a pivoted member carried by said bar and adapted to engage the blocks whereby the adjustable blockwill be shifted, said adjustable block being slotted to provide for the adjusting thereof relative to the other block.

3; An attachment for the purpose set forth comprising a pair of confining blocks flatly positioned against each other, one 01- said blocks being slotted and adjustable, a combined supporting and tensioning element for said slotted block carried by the other of said blocks and extending through said slotted blockand an adjustable element provided with a pivoted member engaging said blocks to adjust said slotted block relatively to the other block.

In testimony whereof I aflix my signature.

CLYDE L. WELSH, 

